Pulley-block.



No; 840,676. 4 PATNTEDJA'N. s, 19o?.

- G.' T. WINNARD & J. BEDFORD.

PULLEY BLOCK. APPLIDATIDN PILDD nu 1. 1906.

' THE Nomels PETERS cn..'wAsHlNcroN, D. c.

UNITED STATES PATENT OFFIOE.

GEORGE T. WINNARD AND JOSEPH BEDFORD, OF SHEFFIELD, ENGLAND.

PuLLEY-BLOCK. i

Specification of Letters Patent.

Patented Jan. 8, 1907.

E Application filed May 7,1906. Serial No. 315,561.

To a/ZZ whom it may concern,.-

Be it known that we, GEORGE THOMAS WINNARD and JOSEPH BEDFORD, subjectsof the'King of Great Britain, residing at Washford Road, Shefield,county of York, England, have invented certain new and usefulImprovements in Pulley-B10 cks, of which the following is aspeciiication, reference being had therein to the accompanying drawings.

This invention relates particularly to such wire-rope blocks as aredescribed in the s eciication of British Patent No. `7 ,922, ated April15, 1896; but it may be applied to other blocks having twowinding-drums, and it refers to the construction of the lower blockcarryin the lifting-hook and a part of the upper bock employed inconnection with the lower block.

The invention is shown in the annexed drawings, in whichy F ifrure 1 isan elevation of a top and bottom lblock with portions of details removedand' parts sectioned; Fig. 2, details of improvements in section.

The lower block consists of two horizontal bars or bearers A, betweenwhich at each end is Supported apulley B, and these pulleys rest in theloop of the wire rope O, which depends from the upper block. In thecenter of the bearers there is a cross-bar D, which carries thelifting-hook E, and over the nut which is screwed upon the shank ofthehook we place a semicircular or arch-shaped rope-supportJ F, having agroove F2 in its periphery to receive the center part of the loop ofwire rope between the two pulleys B.

Centrally between the plates G in the lower part of the upperpulley-block is supported a rope-carrier H, having a semicircular grooveI cut in its side face and located directly When the loo of wire rope ispassed over and supported y the carrier in the upper block, the maximumof liftingpower is obtained; but if the loop is removed from the upperblock and placed in the grooved support F of the lower block then thequickest lifting movement is obtained and the len th ofliftingcapacityis doubled. We alsobyiiliis arrangement produce atwo-part block capable of closing together within the least possiblespace, and this is a matter of the greatest importance in confinedspaces, such as between decks of men-of-war, and other like confinedpositions. Each rope-support F or H may be used separately.

Having now particularly described the nature of our said invention, wedeclare that what we claim is- In pulley-blocks, comprising upper andlower blocks the combination with t e lower block of the groovedrope-support F, substantially as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

. GEORGE T. WINNARD.

JOSEPH BEDFORD. Witnesses: r

ROBT. F. DRUEY,A ENSOE D. DEUEY.

